“Among the high profile staffers-turned-lobbyists are Andrew Lowenthal, the former minority staff director of the Senate Subcommittee on Securities, who once served as a key staffer for Sen. Chris Dodd. Nate Gatten, the former top banking aide to Sen. Bob Bennett (R-Utah), later jumped to become a lobbyist for Fannie Mae, and Joi Sheffield served as the Democratic staff director of a Senate Banking subcommittee, now a lobbyist for financial regulators…